Loctite 660?

Geo-TH,In · Aug 6, 2022

Have you used Loctite 660?

The boys at the hydraulic shop say it bonds well to metal and it
can be machined.

I want to know if you have ever used it to repair tiny pits in a
hydraulic cylinder rod?
Or fill in rust pits inside a hyd cylinder?

I have tried using epoxy and it doesn't bond well to the hyd
rod.

shaun wallace · Aug 6, 2022

In 40+ years of working with and on hydraulic cylinders the only shure repair is replace the the worn or pitted components. I have seen all kinds things cobbled up to fix cylinders and some do work for very short time. Some cylinders are cheaper to replace than the labor and parts to repair. 3x8 and 3 1/2x8 are two of them unless phasing cyls. Using orings over that been service for years is one thing seen done.

Geo-TH,In · Aug 6, 2022

Before Terramite went out of business I could order a special cylinder, $600, but it can't buy it anymore.

I think it was special made at the factory..

So repair is my only option.

Yes, some cylinders I replaced with cheap ones from Ukraine.

Would like to know if anyone has used LT 660?

Jim.ME · Aug 6, 2022

I have used (and keep some on hand) Loctite 660 to repair parts that have lost a press fit. From my experience with it, I don't see it working for what you are describing. Loctite 660 (aka Quick Metal) is a retaining product used to restore press fits. It would be the wrong product to use to try to fill pits in a cylinder rod or barrel. Loctite does make some putties used for MRO that might work, but if any flakes out it may get into your pump and valves. Some shops can rechrome rods or make new rods from the proper stock. Some can replace the cylinder barrels, reusing the old barrel ends.

A product's Technical Data Sheet published by the product's manufacturer is the best place to get the straight info and parameters for the use of a product, especially these "epoxies".

Here is a copy of the technical data sheet for 660.
Loctite 660 TDS

This post was edited by Jim.ME on 08/06/2022 at 02:56 pm.

Steve@Advance · Aug 6, 2022

I have used 660, but not for filling rust pits.

It is made to be used as an adhesive to secure float fitted parts. Parts with an intentionally loose fit that are held in precision alignment until the adhesive sets. In order to properly set, the product needs to be in contact with metal and deprived of air.

I doubt there is any product that will long term successfully hold, but I would lean toward a high tensile, machinable, 2 part epoxy.

4520BW · Aug 6, 2022

George,there is a cylinder repair shop near me that makes alot of parts for cylinders. They rebuild a loader and planter cylinder for me this spring cheaper than i can buy the parts.

caterpillar guy · Aug 6, 2022

Is that not what they call grape jelly for a nickname. It uses lack of air ti set it up so I would doubt it would work on a cylinder rod since you would not be able to seal it without having whatever you used stick to it.

Geo-TH,In · Aug 7, 2022

Thanks,
I have a repair shop close by. They don't weld on cylinders.
I need a special cylinder that has ports in odd locations..

Most cylinders have ports aligned.
This one does not.

If I have to I'll drill holes weld ports where they need to be.

Geo-TH,In · Aug 7, 2022

The place I get hyd hoses made also sells bearings.
They said they used to sell something like Loctite 660 that had metal particles in it and it was machineable. Do you know what it was called?

Jim.ME · Aug 7, 2022

(quoted from post at 07:20:15 08/07/22) The place I get hyd hoses made also sells bearings.
They said they used to sell something like Loctite 660 that had metal particles in it and it was machineable. Do you know what it was called?

They make numerous putties fitting your description. As for getting the correct repair putty for a given use, a full line industrial bearing house should be able to put you in touch with a rep in your area who can tell you what product they recommend, or don't recommend doing. Loctite (Henkel) and Belzona are the two larger players for these products in this area.

As far as I am concerned that is the best route to use, given the risk if it fails, better than me or anyone else here saying use this. I'm surprised some one hasn't said to use JB Weld yet, it might work, some have used it for such. An example of bad info possible is right in your original post, that your guys said use Loctite 660 on the rods. We always contacted a rep when encountering a new issue, to get their best product for that application.

I would find a shop that can build a rod and barrel, if the one you are using can't. Not saying the shop, you use isn't good, but they don't provide that service, others do.

Loctite 660?

Geo-TH,In

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shaun wallace

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Geo-TH,In

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Jim.ME

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Steve@Advance

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4520BW

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caterpillar guy

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Geo-TH,In

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Geo-TH,In

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Jim.ME

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